Deleted .env files from the microservices example

Author: Fredwards

examples/microservices/books/.env

@@ -1,11 +1,9 @@
 require('dotenv').config();
-// const chronos = require('chronos-tracker');
 const chronos = require('chronos7test');
 
 chronos.use({
   microservice: 'books',
   interval: 2000,
-  jmxuri: 'http://localhost:12345/metrics',
   // dockerized: true,
   database: {
     connection: 'REST',